D'Wolf, J. (1965). A voyage to the North Pacific and a journey through Siberia, more than half a century ago. Research Publications.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रD'Wolf, John. A Voyage to the North Pacific and a Journey Through Siberia, More than Half a Century Ago. New Haven, Conn.: Research Publications, 1965.
एमएलए (8वां संस्करण) प्रशस्ति पत्रD'Wolf, John. A Voyage to the North Pacific and a Journey Through Siberia, More than Half a Century Ago. Research Publications, 1965.
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